Spray Foam Insulation in Tujunga — Same-Day Service, Done Right the First Time

Fast, Reliable Spray Foam Insulation Across Tujunga

Spray foam insulation in Tujunga typically runs $2.50 – $5.00 per board foot for open-cell and $3.50 – $7.00 per board foot for closed-cell, with most attic jobs landing between $1,800 and $5,200 depending on square footage and prep work. We’re Thermal Insulation Co, and we’ve worked in the 91042 and 91043 foothills long enough to know that Tujunga attics aren’t the same as the ones down in the San Fernando Valley. The heat up here is sharper, the winter nights drop colder, and the eave vents collect debris you won’t find in flatland LA. Call (855) 382-3451 for a free estimate, and we’ll have someone out to your street within 24 to 48 hours.

Call (855) 382-3451

Our Spray Foam Insulation team handles everything from rim joist sealing to full roof deck encapsulation, backed by two of the industry’s strongest foam brands: Icynene and Demilec. Whether you’re on a hillside lot off the Angeles National Forest boundary or in a mid-century stucco ranch down by Foothill Boulevard, we match the foam system to your house, not the other way around.

Why Thermal Insulation Co Is Tujunga’s Preferred Spray Foam Insulation Company

We’re an insulation-only contractor. That’s the whole trade. Attic batts, blown-in loose-fill, and spray foam: three methods, one specialty, eight brands. When you call us about a Tujunga attic, you’re not talking to a generalist who happens to do spray foam between kitchen remodels. You’re talking to a crew that has pulled wind-blown leaf litter out of eave bays, sealed top plates, and sprayed foam against roof decks in this exact zip code. Homeowners in Tujunga call us because we can explain why closed-cell makes sense on one street and open-cell on another without reaching for a sales script.

Ruben Castellano, who leads our crew, has spent years working attic spaces across Los Angeles County, and he’ll be the first to tell you that canyon-edge homes in Tujunga punish shortcuts. Debris-packed eaves, rodent nesting crushed into old fiberglass, Santa Ana winds hitting unsealed attic seams from October through January. These aren’t hypotheticals to us. They’re Tuesday. When a Tujunga homeowner calls (855) 382-3451, they get a straight answer about what their attic actually needs, not a quote for whatever foam happens to be on the truck.

Closed Cell Spray Foam Insulation in Tujunga

Closed Cell Spray Foam Insulation in Tujunga is the right call when you need structural rigidity, an air barrier, and serious R-value per inch, and it’s what we reach for on hillside homes where the roof deck takes direct summer heat. Closed-cell foam cures dense, roughly 2 pounds per cubic foot, and delivers around R-7 per inch, which means a 3-inch lift against the roof deck gets you past R-20 without stealing headroom. In Tujunga’s older bungalows, where rafter bays were built shallow and every inch counts, that’s often the deciding factor. Expect to pay $3.50 to $7.00 per board foot installed, with a typical attic running $3,200 to $5,200 once prep and air-sealing are factored in.

Where Closed-Cell Earns Its Cost

On canyon-adjacent streets off the forest boundary, closed-cell foam does more than insulate. It seals the attic against wind-driven embers and hot, dry Santa Ana air that pushes through gaps in older framing. That’s the wildfire-conscious standard Tujunga demands.

When We Don’t Recommend It

Not every Tujunga attic needs closed-cell. If you have unaddressed knob-and-tube or early Romex wiring runs, spraying foam over them is a mistake. We flag wiring issues before any foam goes down, because burying live knob-and-tube under cured closed-cell foam creates a heat-trapping problem and a code violation you’ll have to dig out later.

Open Cell Spray Foam in Tujunga

Open Cell Spray Foam in Tujunga is the go-to for attic ceilings and interior walls where you want air-sealing and sound deadening without the higher cost of closed-cell. Open-cell expands aggressively, fills odd rafter bay shapes and old framing gaps, and cures soft enough to trim and work around. It delivers around R-3.5 per inch, so we typically spray 6 to 8 inches against Tujunga roof decks to hit code-comparable performance. Pricing runs $2.50 to $5.00 per board foot, with most open-cell attic jobs in Tujunga landing between $1,800 and $3,800.

Attic Ceilings and Interior Walls

Tujunga’s mid-century stucco bungalows have thin walls and hollow ceilings. Open-cell foam fills those cavities and cuts the noise transfer between rooms, which helps when you’re living in a 900-square-foot ranch where every footstep carries. It also air-seals the attic plane so the Santa Ana gusts can’t whistle through.

Prep Work Makes the Difference

Here’s what separates a good open-cell install from a bad one in Tujunga: the substrate. We won’t spray foam against eave bays packed with leaf litter and rodent nesting, because the foam will simply fail to bond. Our prep on canyon-edge homes starts with debris extraction and air-sealing before the first lift of open-cell goes down. It’s unglamorous work. It’s also the only way the foam actually performs.

Trusted Brands We Service in Tujunga

We carry Icynene and Demilec spray foam systems in both open-cell and closed-cell formulations, and we stock enough material to handle Tujunga jobs without wait times. Why those two? Icynene’s open-cell formulation expands reliably in older Tujunga rafter bays that were never built square, and Demilec’s closed-cell foam cures with the compressive strength hillside homes need against the roof deck. We also work with Owens Corning and Johns Manville fiberglass products when a Tujunga attic calls for a fiberglass-over-foam assembly for ember resistance, which is a real consideration up here in the foothills. Eight brands on the shelf means the recommendation comes from your house, not our inventory.

Common Spray Foam Insulation Problems We See in Tujunga Homes

• Debris- and rodent-packed eave vents. Tujunga sits against the Angeles National Forest boundary, and the wind blows leaf litter, twigs, and dry brush into eave bays all year. When rodents nest in that debris, the old fiberglass or cellulose underneath gets compressed and crushed, and fresh foam sprayed over contaminated surfaces won’t bond. We clear and seal before we spray.
• Santa Ana wind-driven embers. From late September through December, hot dry winds push down through the canyons. An attic that isn’t sealed at the top plates and eave gaps becomes a chimney in those conditions. Foam applied without new ember-resistant venting or ignition barriers fails the standard Tujunga homeowners need.
• Foam over unaddressed wiring. Tujunga’s 1940s to 1960s housing stock still has plenty of knob-and-tube and early Romex runs up in the attic. Closed-cell foam sprayed over active knob-and-tube traps heat and creates a code problem. We inspect and flag wiring before any foam is applied.
• Single-method quotes from generalist contractors. A lot of companies quoting spray foam in Tujunga only stock one type of foam. If your attic needs open-cell for a vented assembly and they only spray closed-cell, you’ll get the wrong product. We stock both and choose based on the attic’s actual construction and moisture profile.

Pricing for Spray Foam Insulation in Tujunga, CA

We Also Serve Cities Near Tujunga

Our Tujunga crew runs the same trucks and the same prep standards into Sunland, La Crescenta-Montrose, Shadow Hills, and up over the hill into Burbank. If you’re in a canyon-adjacent home in any of those foothill communities, the debris-and-rodent prep work we do in 91042 applies equally to your attic. Call (855) 382-3451 and tell us your street; we’ll know the terrain.

FAQs About Spray Foam Insulation in Tujunga